﻿using System;
using System.Collections.Generic;
using System.Text;

namespace ConsoleApp1
{
    class Jisuan
    {
        private double num1 = 3.14;
        private int num2;
        private int num3;
        public int Num2 { get; set; }
        public int Num3 { get; set; }
        public double Num1
        {
            get { return this.num1; }
            set { this.num1 = value; }
        }
        public double Mianji(double pai, int banjing)
        {
            return pai * banjing * banjing;
        }
        public int Mianji(int chang, int kuan)
        {
            return chang * kuan;
        }
    }
}
